[glib] (5 commits) Non-fast-forward update to branch wip/smcv/issue1923

[Simon McVittie <smcv src gnome org>]

The branch 'wip/smcv/issue1923' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  15a5c2d... goption: Relax assertion to avoid being broken by kdeinit5

Commits added to the branch:

  43697d6... Revert "gdbus-codegen: emit GUnixFDLists if an arg has type (*)
  4aaeac5... gdbus-codegen: Safer header guards (*)
  86bc43d... Merge branch 'wip/mattiasb/gdbus-codegen-safer-headerguards (*)
  9b8ff41... Merge branch 'no-more-automatic-GUnixFDList' into 'master' (*)
  00210aa... goption: Relax assertion to avoid being broken by kdeinit5

(*) This commit already existed in another branch; no separate mail sent